The Ơ Đu (O'du) are an aboriginal ethnic group in Vietnam and Laos.

[2] The Ơ Đu subsist mainly on slash-and-burn agriculture and raising cattle, augmented by hunting, gathering, and weaving.

[2] There is some debate as to whether the Khmuic languages are of the Mon–Khmer branch, but the majority opinion is that they are not.

Most Ơ Đu presently speak Thai.

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